Rotary blower.



PATENTED NOV. 21, 1905.

PLmAT No. 804,860. PATENTED NOV. 21, 1905.

H. B. KBIPEB.. ROTARY BLOWER.

APPLICATION FILED JUNE 18, 1901. RBNEWED APR. 10. 1905.

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ROTARY BLOWER.

Specification of Letters Patent.

Patented Nov. 21, 1905.

Application led June 18, 1901. Renewed April 10, 1905. Serial No.254,722.

-T all whom, it may concern:

Be. it known that I, HENRY B. KEIPER, a citizen of the United States,residing at Lancaster, in the county of Lancaster and State ofPennsylvania, have invented certain new and useful Improvements inRotary Blowers; and I dohereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention' relates to rotary blowers; and it consists substantiallyin the improvements hereinafter more particularly described, and pointedout in the claims.

In a former application filed by me on the th day of June, 1901, SerialNo. 63,983, I

n have shown and described a certain embodiment of combined gearing andcasing therefor comprising a main or driven shaft for operating a bloweror other device, a train of driving-gears for said shaft, the wheelswhereof are parallel with the shaft and with each other, and atransversely-divided inclosing casingin separable longitudinal parts inwhich the said shaft and gears have their bearings, whereby the movableor rotatable elements or parts are cooperatively arranged and housed incompact form, so as to economize both in space -consumed and materialemployed in the construction. Also in each of the former Letters Patentgranted to me on the 11th day o f June, 1901, and numbered 67 6,322,676,323, and 67 6,324, respectively, I have shown a somewhat similarembodiment of combined gearing and inclosing casing therefor, each ofsuch embodiments, however, possessing certain special characteristics or.features of construction differentiating it from the others. In theconstruction or embodiment covered by my other pending applicationreferred to I preferably dispense with the worm and worm-wheel shown anddescribed in each of my above-named Letters Patent, and as a directconnection between the main or driven shaft and operating-gearing Isubstitute a b'eveled pinion mounted on said shaft and engaged andoperated by a similar pinion arranged at an angle thereto and in turnoperated from said gearing. Also in my other pending application theinclosing casing for the gearing is provided at proper points withsuitable bearings for the main or driven shaft,

as well as for the ends or journals of the axles or shafts of theseveral wheels of the geartrain, and said wheels are constructed in anysuitable way to successively communicate motion from one to the other.In said embodiment also the inclosing casing for the gearing ispreferably transversely divided into separable or detachable sections onsubstantially a horizontal line, (as distinguished from the verticaldivisional line of my several former patents referred to,) and saidinclosing casing may or may not be provided with means for theintroduction of a lubricant to the interior thereof for the purpose ofkeeping the engaging or operative faces of the inclosed geartrain welloiled or lubricated.

In my present invention I may employ either one of the embodiments ofcombined gearing and inclosing casing therefor hereinbefore referred to;but I have herein represented substantially the embodiment of gearingshown in each of said former Letters Patent combined with an inclosingcasing of the form shown and described in my other pending application,it being understood that my present invention is intended to comprehendor include different or various combinations of these said associatedelements either in entirety or in separate or special features of each.

The present invention has for its object to provide a rotary blower,together with a' gearing and inclosing casing therefor, combined with aportable stand or su pport,'the whole being arranged or disposed incompact form, so as to occupy but small space either in use or intransportation, and possessing the characteristics of great strength,durability, and ready separability of the several parts or elementsthereof.

A further object is to provide means whereby the superstructure(consisting of the fan and its casing, with the gearing and its casing)is detachably mounted upon the stand or support therefor, and alsowhereby the said superstructure is longitudinally adjustable back andforth within certain limits to permit changes of position thereofincident to different or varying requirements in use.

A still further object of the present invention is to provide simple andeffective means whereby the superstructure is readily adjusted todifferent heights to suit the reach of different operators-and for otherpurposes;

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view, on a smaller scale, of a modified form of blower and combinedgearing and casing there- 'By means of said screws adjustments of the:while it will also be observed that the lower and also whereby saidsuperstructure may be brought to different circular adjustmentshorizontally, substantially as will hereinafter be more particularly setforth.

The above and additional objects I attain by means substantially suchare illustrated in the accompanying drawings, wherein- Figure 1 is aviewin perspective of the entire structure embodying my presentinvention, the said ligure indicating the machine all ready for use.Fig'. 1ais also a perspective the stand or support for thesuperstructure. Fig. 2 is an enlarged vertical central longitudinalsectional view of the superstructure or for, together with the head orupper portion of the stand or support for said superstructure, the saidhead or upper portion being shown as broken off. Fig. 3 is a verticaltransverse sectional view on the line fr av, Fig. 2, looking toward theleft, the fan-casing, together with the head or upper portion of thestand or support, being removed. Fig. 4 is a bottom plan view of thecombined or integral clamp and supporting-post for securing thesuperstructure in position upon the stand or support.

Referring specifically to the several parts of the drawings, I willfirst proceed to describe the stand or support and then follow with adetailed description of the dierent elements constituting thesuperstructure, as well as the attaching meanstherefor, and the severaladjusting devices or means.- Thus, as shown in Figs. 1 and 2, the saidstand or support is designated as a whole at A and is preferably in theform of a tripod, or, if desired, the same may be formed or providedwith four or more legs, as shown in Fig. 1. The said stand or support isconstructed of any suitable material, preferably metal, and comprises ahead or top piece a, substantially of triangular or quadrangular shapein top plan and having therein a central hole or opening The head ispreferably increased in thickness at said opening or formed with a bossc, and the head or top piece is also formed or provided on its underside at or near the angles or corners thereof with sockets d, each forthe reception of the upper end of one of the legs e, as shown. The heador top piece is provided at each of its corners or angles with aset-screw f, and each of the sockets CZ is also provided in its sidewith a similar setscrew g, the said set-screws f and g being for thepurpose of stability and preventing turning of the legs within thesockets during the time the machine is inaction or operation.

legs can also be effected when desired. It will thus be seen that thevertical portions of the legs e are brought within small compass,

ends thereof are bent or curved outwardly at fr, so as to provide feetz', covering an ample base and furnishing secure bracing. The said legsmay be constructed of any suitable material, but are preferably ofgas-pipe or the like for the purposes of lightness and strength. Fittingwithin or passing down through the central opening of the said head ortop piece t is a post or stem m, having a head-piece n, the two beingpreferably integral with each other and with one of the side portions 0of a clamp B, the otheror detachable side portion'p of said clamp beingpractically a duplicate or counterpart of the first. The said post andclamp constitute the means by which the superstructure is mounted inplace or position upon the stand or support A, and the head or top piecea is provided at one side with a set-screw r, by means of which the saidsuperstructure is held or maintained at different heights or verticalpositions after raising or lowering the said post or stem m within theopening of head ct. It will of course be understood that by looseningsaid screw fr the superstructure can be turned or adjusted to anydesired point or position in a horizontal plane. The side portions 0 andp of the clamp B are each parti-cylindrical in shape and extendhorizontally a suitable distance to either sidev of the post, as shown,and they are formed with integral pendent or vertical iianges s, whichabut or fit together closely and are securely held in rigid relation bysuitable means, as by headed screw-bolts or pins t. (See Fig. 4.) Eachof said side portions of the clamp B is formed with an innerlongitudinal groove fu, and when the superstructure C is mounted inplace within said clamp the said grooves serve to receive correspondinglongitudinal ribs or tongues formed on opposite sides of the lowercylindrical portion of the inclosing casing for the gearing, as will bedescribed. In reference to the said superstructure C it will beunderstood that the same comprises or includes a rotary fan or blower 1and an inclosing casing 2 therefor, together with the operating-gear andits housing or inclosing casing 3, the two said casings being united orfastened together, as will be presently described. The said fan orblower and its inclosing casing may be of any ordinary construction, butis preferably of the form shown in my former patent, No. 676,323,referred to, while the operating-gear for the fan may also be of anydesired arrangement, but is preferably of the same general embodiment ofeither one of my aforesaid Letters Patent. In the present case, however,I pre- IOO fer the same character of inclosing casing for theoperating-gearing as is shown and described in my other pendingapplication, although in some instances a casing similar to those shownin my said patents may be employed. Thus, as shown more particularly inFig. 2, the fan-casing 2 is in two parts or l by means of screws 21, asshown. This lat- 65 sections suitably joined together vertically, and,as shown more clearly in Fig. 1, said casing is formed at its lower partwith a neck 4 for the attachment of suitable tubing or piping (notshown) for connecting the blower with any suitable place, as the hearthof a forge, (not shown,) forinstance, at which the air-blast produced bythe fan isv to be directed or delivered.

The housing or inclosing casing 3 for the operating-gearing comprisestwo side pieces 5 and 6, which are to a certain extent duplicates orcounterparts of each other, in that they are each curved or rounded at 7to conform as closely as possible to the general contour orconfiguration presented by the inclosed gear-train within, each of saidside pieces being also curved or rounded on their upper edges at 8, thetwo curves joining or uniting with each other in a suitable angle at 9.The said side pieces 5 and 6 are connected or joined together integrallyby a wall or body portion 10, which except for the transverse divisionof said housing or casing on the line 11, Fig. 2, is practicallycontinuous between the points 12 and 13, (also Fig. 2,) and which wallor body portion follows the general shape or configuration abovementioned with regard to the said side pieces 5 and 6. The said housingor casing 3 is also formed at its lower part with an integrallongitudinal tubular or swelled portion A14, which is set inwardlysomewhat from side piece 6 and which projects some what beyond sidepiece 5, (see Fig. 2,) said tubular or swelled portion being preferablyof length substantially equalto or somewhat in excess ofthe sideportions o and p of the clamp B, as shown. This tubular portion 14 isreceived between said side portions of the clamp, and it is formed onopposite sides thereof with the longitudinal ribs or tongues 15, whichare received in the grooves e o of said clamp B. (See Fig. 3.) It willthus be seen in what manner the superstructure C is held rigidly inplace upon the stand or support, and it is of course apparent that bypartially unscrewing the bolts or pins t the said superstructure C maybe adjusted longitudinally between the side portions of clamp B for alimited distance to suit any requirement therefor. The said inclosngcasing 3 is thus divided into two separable sections,of which the upperone constitutes a cover or lid, which at the outer end of the casing isprovided with an inner notched projection 17, slipping over anadjustable screw 18, fitting in asimilar inner projection of the lowercasing-section, while at the innermost end of said casingfastenin-g-screws 19 are n employed to secure the cover-section inplace. Also formed at the innermost part of inclosing casing 3 is anintegral plate 20, to which attachment of the casing for the fan orblower is effected terly-described construction of parts issubstantially the same as is employed in my other pending application,and no further specific reference thereto is required.

The operating-gearing for the fan or blower comprises, preferably, inthis vinstance a main spur-gear 22, the shaft 23 of which isprovidedwith an operating crank or handle 24, and said gear 22 engages with apinion 25 on shaft 26 of a worm-wheel 27, which in turn engages ormeshes with a worm 28 on a main or driven shaft 29, each end of thelatter being screw-threaded, as shown at 29 and 30, and the inner endwhereof extends in to the inclosing casing for the fan and having thesaid fan secured thereto in any suitable manner, as shown in Fig. 2. Theends or journals of each of the gear-wheel shafts are supported in theside pieces 5 and 6 of the inclosing casing 3 for the gearing, and themain or driven shaft 29 is supported in the ends of' the lower tubularportion of said casing, it being understood that theV said ends orjournals of each of the shafts referred to may have either plain orantifriction bearings, as found most desirable in practice. Foreachjournal of the shaft 26 of the worm-wheel herein I preferably employ aphosphor-bronze bushing 35, fitting in the side pieces 5 and 6 of theinclosing casing 3 and screwing into an interiorlythreaded outer boss36. On each of said side pieces is a disk 37 recessed at 38 on its innerface and having a central threaded opening, in which is a hardened-steelscrew 39, on the outer end of which is a jam-nut 40, which screws upagainst the outer side of the disk for the purpose of taking up lateraland endwise motion, as is clear. rl`he inner end of each of said screws39 bears upon or against a ball 41, seated in a recess in thecorresponding end of the said shaft 26, and as the said inner ends of'the said screws are shown as fiat very perfect bearings for the ends ofsaid shaft are obtained irrespective of the particular points at whichthe ends of the screws contact with the said balls. Said screws areadapted at their outer ends to receive a screw-driver either for theirinsertion or withdrawal, as well as for their adjustment, and fittinginto each of the said bosses 36 onthe casing 3 is a dust-cap 43, whichis screwed up against the disk, the latter in turn being screwed uptightly against the said phosphor-bronze bushing 35, and thus is adouble lock obtained between these parts.

The driven or worm shaft is supported at the ends of the lower tubularportion of said inclosing casing 3, as shown, said ends being ofincreased thickness and having openings 45 for the passage of thejournals of said shaft, said openings having different diameters, alsoas shown, (see Fig. 2,) and being interiorly threaded to receive outerclosures or dust-caps 1 46. Inserted in each of said openings, at theIOO IIO

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base thereof, is a pressed-steel cup 47, forming a raceway for the setsof balls 48, and screwing onto the said worm-shaft are theadjusting-cones 49 for said balls, behind which are the washers 50,followed by the jam or lock nuts 51, the general construction andpurpose of all of which is fully apparent.

As beforek stated, I do not wish to be understood as limiting myself toany particular form of support or bearing for either the shafts of thegear-wheels or the driven shaft,since either plain or any suitable formof ball or other antifriction bearings therefor may be used, accordinglyas may be desired in practice.

From the foregoing it will be seen that my improved combined rotaryblower and stand or support therefor is exceedingly cheap and simple,besides being easily taken apart and again put together wheneverdesired, and it will also be seen in what manner adjustments of thesuperstructure are made or effected. The operation of the parts takesplace in an easy and noiseless manner and with the eX- penditure of butlittle labor on the part of the operator, and the several interiorlparts or elements are most thoroughly protected from injury, as well asfrom dust and dirt.

I do not limit myself to any of the precise details of construction andarrangement of parts or elements herein shown and described.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent of the United States, is

l. In a blower, a stand or support, a superstructure detachably mountedthereon comprising a fan and casing therefor together with a combinedoperating-gearing and inclosing casing therefor, means permittinglimited longitudinal adjustments of said superstructure, and meanspermitting both vertical and horizontal adjustments thereof,substantially as described.

2. In a blower, a tripod having a removable or detachablecentrally-apertured head, and a superstructure detachably mounted onsaid head comprising a fan and casing therefor and a combinedoperating-gearing and inclosing casing therefor, said su perstructurebeing mounted on a stem or post fitting said aperture, substantially asdescribed.

3. In a blower, a tripod having an apertured head provided on its underside with sockets, supporting-legs removably and adjustably inserted insaid sockets, and a superstructure mounted on a stem or post fitting theaperture in said head comprising a fan and casing therefor together witha combined operating-gearing and inclosing casing therefor,substantiallyas described.

4. In a blower, a stand or support having a head with an openingtherein, a removable clampmounted on a postadjustably secured in saidopening, and a superstructure detachably supported by said clamp andcomprising a fan and casing therefor together with a combinedoperating-gearing and inclosing casing therefor, substantially asdescribed.

5. In a blower, astand or support having a head with a removable clampmounted thereon, means for adjusting said clamp in vertical andhorizontal directions,and a superstructure detachably supported by theclamp and com: prisinga 'fan and casing therefor together with acombined operating-gearing and inclosing casing therefor, substantiallyas described.

6. In a blower, a tripod havinga head, a removable clamp having a postadjustably secured in an opening in said head, and a superstructuredetachably supported by the clamp and comprising a fan and' casingtherefor and a combined operating-gearing and inclosing casing therefor,substantially as described.

7. In a blower, a tripod having a head, a removable clamp adjustablymounted on said head, means for adjusting said clamp in vertical andcircular horizontal directions, anda superstructure detachably supportedby the clamp and comprising a fanand casing therefor and a combinedoperating-gearing and inclosing casing therefor, substantially asdescribed.

8. In a-blower, a tripod having a head provided on its under side withsockets, supporting-legs adjustably and detachably fitting in saidsockets, a removable clamp mounted on said head, and a superstructuredetachably supported by the clamp and comprising a fan and casingtherefor and a combined operating-gearing and inclosing casing therefor,substantially as described.

9. In a blower, a stand or support having a head provided with anopening therethrough, a clamp having a post or stem adjustably fittingsaid opening, and a superstructure detachably supported by said clampand comprising a fan and casing therefor and a combined gearing andinclosing casing therefor, substantially as described.

10. In a blower, a stand or support having a head provided with anopening therein, a clamp having a post adjustably fitting said openingand constructed of two substantially parti-cylindrical sections eachhaving a longitudinal groove therein, and a superstructure having atubular portion having ribs or tongues fitting said grooves, saidsuperstructure further comprising a fan and casing therefor and acombined operating-gearing and inclosing casing therefor, substantiallyas described.

1l. In a blower, a stand or support having a head provided with anaperture, a vertical post or stem adjustably secured in said aperture, atwo-part clamp mounted on said post, one member of which is integralwith said post, and a blower-casing having a portion thereof grippedbetween the members of said clamp, substantially as described.

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nal ribs fitting said grooves in the clamp IO members, substantially asdescribed.

In testimony whereofl I aiiX my signature in presence of two Witnesses.

HENRY B. KEIPER.

Witnesses:

M. G. SWAN,A WALTER A. MILLER.

